package com.sky.interceptor;

import com.atom.module.common.BaseContext;
import com.sky.common.constant.JwtClaimsConstant;
import com.sky.common.properties.JwtProperties;
import com.sky.common.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;


/**
 * jwt令牌校验的拦截器
 * 管理端的校验
 */
@Component
@Slf4j
public class JwtTokenAdminInterceptor implements HandlerInterceptor {


    @Autowired
    private JwtProperties jwtProperties;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            //当前拦截到的不是动态方法，直接放行
            return true;
        }

        // 排除
        String requestURI = request.getRequestURI();
        log.info("requestURI:{}", requestURI);
        if(requestURI.contains("/admin/login")){
            return true;
        }

        //1、从请求头中获取令牌
        String token = request.getHeader(jwtProperties.getAdminTokenName());

        //2、校验令牌
        try {
            log.info("jwt校验:{}", token);
            Claims claims = JwtUtil.parseJWT(jwtProperties.getAdminSecretKey(), token);
            Long empId = Long.valueOf(claims.get(JwtClaimsConstant.EMP_ID).toString());
            // 将获取到的登陆人员工id存入到ThreadLocal中，供后续使用
            BaseContext.setCurrentId(empId);
            log.info("当前员工id：{}", empId);
            //3、通过，放行
            return true;
        } catch (Exception ex) {
            log.error("令牌解析失败：{}", ex.getMessage());
            //4、不通过，响应401状态码
            response.setStatus(401);
            return false;
        }
    }
}
